If you experience problems connecting to the data source, you can obtain ODBC tracing information to analyze and resolve the problems.
Symptom
However, activating a trace does impact system performance. You should turn off tracing after you have resolved the connectivity problems.
Cause
The cause of the problem might be an error in the wrapper configuration.
Diagnosing the problem
To diagnose the problem on a federated server running Windows®:
1. Click start à SettingsàControl Panel
3. Click Data Sources (ODBC) to open the ODBC Data Source Administrator window
4. Click the Tracing tab
5. Click Start Tracing Now to start the trace utility
Resolving the problem
Check the trace log file for problems.On Windows, open the ODBC Data Source Administrator and click the Tracing tab. The path to the trace log file is shown in the Log File Path field.